US 12,290,357 B2
Apparatus and method for calculating a volume flow rate of oxygenated blood
Jesse M. Klostranec, Toronto (CA); and Emidio Tarulli, Kingston (CA)
Assigned to FLOW CPR INC., Toronto (CA)
Appl. No. 17/427,312
Filed by FLOW CPR INC., Toronto (CA)
PCT Filed Jan. 31, 2020, PCT No. PCT/IB2020/050806
§ 371(c)(1), (2) Date Jul. 30, 2021,
PCT Pub. No. WO2020/157724, PCT Pub. Date Aug. 6, 2020.
Claims priority of provisional application 62/799,221, filed on Jan. 31, 2019.
Prior Publication US 2022/0125356 A1, Apr. 28, 2022
Int. Cl. A61B 5/1455 (2006.01); A61B 5/00 (2006.01); A61B 5/0265 (2006.01)
CPC A61B 5/14551 (2013.01) [A61B 5/0265 (2013.01); A61B 5/6822 (2013.01); A61B 5/6833 (2013.01); A61B 5/7405 (2013.01); A61B 5/742 (2013.01); A61B 5/746 (2013.01); A61B 2560/0214 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a support having a first side and a second side opposite the first side, the support configured to be removably adhered to a skin of a human adjacent a target region of tissue;
an optical sensor secured to the support at the second side of the support to detect an absorption of light by blood flowing through the target region for determining a blood oxygenation percentage of the blood flowing through the target region;
a magnetic sensor secured to the support at the second side of the support to induce a magnetic field in the target region and to detect changes in the magnetic field at the target region corresponding to a presence of deoxyhemoglobin in blood, for determining a volume flow rate of deoxyhemoglobin flowing through the target region; and
a processor secured to the support and coupled to the optical sensor and the magnetic sensor for determining the blood oxygenation percentage and the volume flow rate of deoxyhemoglobin and calculating a volume flow rate of oxygenated blood flowing through the target region based on the blood oxygenation percentage and the volume flow rate of deoxyhemoglobin.